Support multiple Dockerfiles

.github/workflows/ci.yml

@@ -29,6 +29,10 @@ jobs:
             expected: '["linux/arm64","linux/amd64"]'
             with:
               image: ghcr.io/home-assistant/home-assistant:2024.12.2,ghcr.io/wyrihaximusnet/php:8.3-zts-alpine-dev
+          - name: Multiple Dockerfiles
+            expected: '["linux/amd64","linux/arm64"]'
+            with:
+              dockerfile: tests/Dockerfile*
     steps:
       - uses: actions/checkout@v4
       - name: OCI Image Supported Platforms

action.yaml

@@ -5,7 +5,7 @@ branding:
   color: 'blue'
 inputs:
   dockerfile:
-    description: The Dockerfile to get its supported platforms
+    description: The Dockerfile to get its supported platforms, support patterns that work in both git's sparse checkout and bash. (The pattern needs to work in both.)
     required: false
     default: 'Dockerfile'
   image:
@@ -32,7 +32,7 @@ runs:
       if: inputs.image == ''
       shell: bash
       run: |
-        printf "from=%s" $(cat ${{ inputs.dockerfile }} | grep FROM | tail -n 1 | docker run -q -i --rm ghcr.io/wyrihaximusnet/php:8.3-nts-alpine-slim php -r 'echo explode(" ", trim(fgets(STDIN)))[1];') >> $GITHUB_OUTPUT
+        printf "from=%s" $(cat ${{ inputs.dockerfile }} | grep FROM | xargs -I % docker run -q -i --rm ghcr.io/wyrihaximusnet/php:8.3-nts-alpine-slim php -r 'echo explode(" ", trim("%"))[1], ",";' | head -c -1) >> $GITHUB_OUTPUT
     - name: Image 🧙
       id: image
       shell: bash

tests/Dockerfile-nodejs

@@ -0,0 +1,21 @@
+FROM node:22-alpine3.20
+
+RUN set -x \
+    && addgroup -g 666 app \
+    && adduser -u 666 -D -G app app
+
+EXPOSE 7132
+EXPOSE 7133
+
+RUN mkdir -p /opt/app
+WORKDIR /opt/app
+
+COPY ./ /opt/app/
+
+USER root
+RUN chown app:app /opt/app/ -Rfv
+USER app
+
+RUN npm install
+
+ENTRYPOINT ["node", "/opt/app/app.js"]

tests/Dockerfile-reactphp

@@ -0,0 +1,24 @@
+FROM wyrihaximusnet/php:8.4-nts-alpine-slim-dev AS install-dependencies
+
+WORKDIR /opt/app
+USER root
+RUN mkdir /opt/app/vendor && chown app:app /opt/app -Rfv
+USER app
+
+COPY ./composer.* /opt/app/
+RUN composer install --ansi --no-interaction --prefer-dist --no-dev -o
+
+FROM wyrihaximusnet/php:8.4-nts-alpine-slim
+
+EXPOSE 7132
+EXPOSE 7133
+WORKDIR /opt/app
+
+COPY ./ /opt/app/
+COPY --from=install-dependencies /opt/app/vendor/ /opt/app/vendor/
+
+USER root
+RUN chown app:app /opt/app/ -Rf
+USER app
+
+ENTRYPOINT ["php", "/opt/app/app.php"]